/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dtstack.flinkx.rdb.inputformat;

import org.apache.flink.api.common.accumulators.Accumulator;

/**
 * @author jiangbo
 * @explanation
 * @date 2018/12/21
 */
public class StringAccumulator implements Accumulator<String,String> {

    private String localValue;

    @Override
    public void add(String value) {
        localValue = value;
    }

    @Override
    public String getLocalValue() {
        return localValue;
    }

    @Override
    public void resetLocal() {
        localValue = null;
    }

    @Override
    public Accumulator clone() {
        StringAccumulator stringAccumulator = new StringAccumulator();
        stringAccumulator.add(localValue);
        return stringAccumulator;
    }

    @Override
    public void merge(Accumulator other) {
        // do nothing
    }

    @Override
    public String toString() {
        return "StringData " + this.localValue;
    }
}
